243669888 has 384 divisors, whose sum is σ = 908893440. Its totient is φ = 60825600.

The previous prime is 243669887. The next prime is 243669913. The reversal of 243669888 is 888966342.

It is a tau number, because it is divible by the number of its divisors (384).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243669887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3636831 + ... + 3636897.

It is an arithmetic number, because the mean of its divisors is an integer number (2366910).

Almost surely, 2^243669888 is an apocalyptic number.

243669888 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243669888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (454446720).

243669888 is an abundant number, since it is smaller than the sum of its proper divisors (665223552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243669888 is a wasteful number, since it uses less digits than its factorization.

243669888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 131 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The square root of 243669888 is about 15609.9291478213. The cubic root of 243669888 is about 624.5980459748.

The spelling of 243669888 in words is "two hundred forty-three million, six hundred sixty-nine thousand, eight hundred eighty-eight".